I know you're joking, but I'd like to point out that manufacturers don't need to collude to make crummy lamps. It's in every manufacturer's interest to reduce c

I know you're joking, but I'd like to point out that manufacturers don't need to collude to make crummy lamps. It's in every manufacturer's interest to reduce costs, and since consumers can't tell which lamps will last longer they can't reward manufacturers that do better on this metric.